1540154351044 has 6 divisors (see below), whose sum is σ = 2695270114334. Its totient is φ = 770077175520.

The previous prime is 1540154350993. The next prime is 1540154351059. The reversal of 1540154351044 is 4401534510451.

It can be written as a sum of positive squares in only one way, i.e., 1361216890944 + 178937460100 = 1166712^2 + 423010^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1540154350994 and 1540154351012.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192519293877 + ... + 192519293884.

Almost surely, 2^{1540154351044} is an apocalyptic number.

It is an amenable number.

1540154351044 is a deficient number, since it is larger than the sum of its proper divisors (1155115763290).

1540154351044 is a wasteful number, since it uses less digits than its factorization.

1540154351044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385038587765 (or 385038587763 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 1540154351044 its reverse (4401534510451), we get a palindrome (5941688861495).

The spelling of 1540154351044 in words is "one trillion, five hundred forty billion, one hundred fifty-four million, three hundred fifty-one thousand, forty-four".